Electronic device using an augmented reality

Abstract

Provided is an electronic device using a virtual reality, which is capable of self-aligning an in-coupling angle and an out-coupling angle by using a mechanical mechanism. An electronic device according to an aspect of the present invention includes: a glass body including a frame; an optical engine mounted on a leg of the frame and generating and emitting an image; an optical element mounted on the frame and performing in-coupling and out-coupling of the image emitted from the optical engine and displaying the corresponding image to a user; and a self alignment unit automatically aligning an in-coupling angle and an out-coupling angle of the optical element.

What is claimed is: 
     
       1. An electronic device using a virtual reality, comprising:
 a glass body including a frame; 
 an optical engine mounted on a leg of the frame and generating and emitting an image; 
 an optical element mounted on the frame and performing in-coupling and out-coupling of the image emitted from the optical engine and displaying the corresponding image to a user; and 
 a self alignment unit automatically aligning an in-coupling angle and an out-coupling angle of the optical element, 
 wherein the optical element mounted on the frame rotates automatically in conjunction with a rotation of the optical engine mounted on the leg, 
 wherein the self alignment unit adjusts a rotation angle of the out-coupling angle to be smaller than a rotational angle of the in-coupling angle, 
 wherein the self alignment unit adjusts the out-coupling angle so that the out-coupling angle rotates at θ when the in-coupling angle rotates at 2θ, and 
 wherein the self alignment unit includes a first gear and a second gear having a gear ratio of 2:1 and a third gear positioned between the first and second gears and matching rotational directions of the first gear and the second gear. 
 
     
     
       2. The electronic device of  claim 1 , wherein the self alignment unit adjusts the out-coupling angle by rotating the first gear according to rotational force of the second gear transmitted through the third gear. 
     
     
       3. The electronic device of  claim 2 , wherein the first gear is a lens gear provided in the optical element, the third gear is an idle gear coupled to the lens gear, and the second gear is a temple gear coupled to the idle gear. 
     
     
       4. The electronic device of  claim 3 , wherein the frame includes a first shaft to which the lens gear is coupled, a second shaft to which the temple gear is coupled, and a third shaft to which the idle gear is coupled. 
     
     
       5. The electronic device of  claim 1 , wherein the optical element includes an in-coupler for the in-coupling and an out-coupler for the out-coupling. 
     
     
       6. The electronic device of  claim 5 , wherein the optical element is configured by a diffractive optical element (DOE) or a hologram optical element (HOE). 
     
     
       7. The electronic device of  claim 6 , further comprising:
 two of the optical engine, two of the optical element, and two of the self alignment unit.